Conveyer



May 18, 1 937.

E. K'USS ET AL CONVEYER Filed Sept. 8, 1934 4 Sheets-Sheet l May 18, 1937;. E. Kuss ET AL CONVEYER Filed Sept. 8, 1934 4 Sheets-Sheet 2 May 18, 1937.

E. Kuss ET AL CONVEYER Filed Sept. 8, 1934 4 Sheets-Sheet. 3

May 18, 1937. EL: Kus ET AL- CONVEYER File d Sept; 8, 19 54 I 4 Sheets-Sheet 4 Patented May 18, 1937 UNITED STATES PATENT OFFICE CON VEYER burger Kupferhutte,

Duisburg, Germany, and

one-half to I. G. Farbenindustrie Aktiengesellschaft, Frankfort, Germany Application September 8, 1934, Serial No. 743,262

In Germany September 15, 1933 14 Claims.

This invention relates to an apparatus for the treatment of solid materials with liquids eventually in the presence of gases.

The apparatus substantially consists of a conveying worm rotating in a casing, such as a trough, tube or drum, or a conveying worm which is rigidly arranged in a rotating drum. The conveying worm is provided with openings in the sheet of the worm and with rigid shovels between the threads of the Worm. A means is provided for rotating the conveying worm.

The invention is illustrated by the accompanying drawings.

Figure I shows a mode of execution of the apparatus wherein the conveying worm is rigidly arranged in a rotary drum. Figure II shows a cross section of the apparatus and Figure III a longitudinal section of the middle part of the apparatus as shown in Figure I. Figure IV shows another mode of execution of the apparatus wherein the conveying worm is rotatably arranged in a fixed casing. Figure V is a cross section of Figure IV, and Figure VI is a longitudinal section of the middle part of the apparatus according to Figure IV. Figure VII is a cross section, and Figure VIII a longitudinal section of the middle part of the apparatus in which the shovels are built by a conveying worm, the worm being incised same as a saw blade. Another mode of execution of the shovels and openings is shown in Figure IX in cross section, and in Figure X in longitudinal section. The shovels are arranged in the form of parts of a secondary worm and the openings of the worm consist of sieve-like per- 95 forations.

Fig. XI is a cross-sectional View and Fig. XII is a longitudinal sectional view of a modification of the apparatus in which the shovels extend radially from the axis of the worm and extend parallel to the axis. In the drawings the equal numbers relate to equal parts of apparatus.

l is the feeding device for solid material,

2 is the withdrawing device for solid material,

3 is the inlet for the liquid material,

4 is the withdrawing device for the liquid material,

5 is the gas inlet,

6 is the-gas outlet,

1 is the drive,

8 is the driven shaft,

9 is the casing,

I0 is the worm,

i I is the shovel.

The inlet and outlet devices I to 5 may be of any kind. They only serve to pass the material on to the worm at the one end of the apparatus, and to withdraw the material at the other end.

Figure I illustrates a rotating drum with a rigidly arranged worm, Figure IV a rotating worm in a fixed casing.

The essential feature of the present invention is the worm provided with openings and shovels. The shovels and openings serve to mix the different materials continuously between the single threads of the worm, on the one hand, and to keep the deepest part of the casing free from the solid material to such an extent that the liquid medium .can pass through the openings, on the other hand. This process is effected in the following manner:

The solid material is lifted by the shovels and at the same time is brought in most intimate contact with the liquid medium, and the openings in the sheet of the worm lying below the level of the liquid are set free thereby. When the angle of inclination of the material is exceeded the material slides from the shovels into the liquid, falls before the subsequent shovel, and the process above specified is repeated.

The conveying worm serves to transport the material and to divide the same into single portions. Thus is attained that the material is simultaneously transported and brought into intimate contact with the liquid material. At the same time the material flows from thread to thread without an extensive mixing of the material present at the different places of the apparatus occurring.

The openings of the conveying worm may be of different form. Thus, for instance, the sheet of the worm may be sieve-like perforated as shown in Figures I, III, IX and X. The openings may be differently arranged. Suitably the number of the openings, their size respectively, is increased towards the outer edge of the conveying worm. A further feature of the openings is that the sheet of the worm is cut out, same as a saw-blade, compare Figure VIII. In special cases the sheet of the worm may be incised and the sectors obtained by these incisions obliquely arranged so that the sheet of the worm takes the form of a wing of a ventilator. Another form of the opening is that the worm has a considerably smaller diameter than the inner diameter of the casing, so that between the outer edge of the worm and the casing there is a space through which the liquid may pass.

The shovels may be constructed in difierent forms. For instance, they may be in the form of worms which have a greater angle of inclination 7 than the conveyer worm. Also inv this case the sheet of the shovel maybe provided with open ings. Figures IX and X illustrate further forms of the shovel. In these figures the shovels are even planes arranged between the threads of the worm. The form of shovel according to Figures VII to X besides the mixing movement enables the transportation of the material in the direction of the worm, whereas when arranging the shovels parallel to the axis of the worm the material is only turned over by the shovels. Such form of shovels is shown in Figures II, III, V, VI, XI and XII. The shovels may be arranged radially, compare Figures XI and XII, or may be arranged in an angle to the radius according to the angle of inclination of the material, compare Figures II,

III, V and VI. In order to sustain a given angle of inclination it is necessary that the shovels are rigidly fixed to the sheets of the conveying worm. It depends on the properties of the material to be treated whether a worm rotating in a fixed casing or a drum rotating with the worm is to be used.

We claim:-

1. In an, apparatus for the treatment of solid materials with liquids, the combination of a tube, inlet and outlet devices for introducing material into and withdrawing material from the tube, a conveying worm rigidly arranged inside the tube, the tube being provided with a means for rotating it, the conveying worm being provided with shovels, these shovels being rigidly fixed to the sheet of the conveying worm and having the form of a worm of greater angle of inclination, and the sheet of the conveying worm being provided with openings.

2. In an apparatus for the treatment of solid material with liquids, the combination of a tube, inlet and outlet devices for introducing material into and withdrawing material from the tube, a conveying worm rigidly arranged inside the tube, the tube being provided with a means for rotating it, the conveying worm being provided with shovels, these shovels being rigidly fixed to the sheet of the conveying worm and having the form of a worm of greater angle of inclination, and the sheet of the conveying worm being perforated.

3. In an apparatus for the treatment of solid materials with liquids, the combination of a tube, inlet and outlet devices for introducing material into and withdrawing material from the tube, a conveying worm rigidly arranged inside the tube, the tube being provided with a means for rotating it, the conveying worm being provided with shovels, these shovels being rigidly fixed to the sheet of the conveying worm and having the form of even planes arranged between the threads of the conveying worm, the conveying worm being of 'a substantially smaller diameter than the tube means for supplying liquid to the tube adjacent said outlet device and means for withdrawing liquid from the tube adjacent said inlet device whereby the liquid and solid materials flow countercurrent to each other in the tube.

4. In an apparatus for the treatment of solid materials with liquids the combination of a fixed tube, inlet and outlet devices for introducing material into and withdrawing material from the tube, aconveying worm rotatably arranged'inside the tube the conveying worm being provided with 'a means for rotating it, the conveying worm being provided with shovels, these shovels being rigidly fixed to the sheet of the conveying worm and having the form of even planes arranged between the threads of the conveying worm, and the sheet of.

terial into and withdrawing material from the tube, a conveying worm rotary arranged inside the tube, the conveying worm being provided with a means for rotating it, being further provided with shovels, these shovels being rigidly fixed to the sheet of the conveying worm, the conveying Worm being of substantially smaller diameter than the tube means for supplying liquid to the tube adjacent said outlet device and means for withdrawing liquid from the tube adjacent said inlet device whereby the liquid and solid materials flow countercurrent to each other in the tube.

6. In an apparatus for the treatment of solid materials with liquids, the combination of a casing, means for feeding solid material arranged at one end of the casing, means for discharging solid material arranged at the other end of the casing, a conveying worm arranged within the casing, shovels affixed to the sheet of the conveying worm, means for rotating said conveying worm, means for supplying treating liquid to said casing adjacent said means for discharging solid material and means for withdrawing liquid from the casing adjacent said means for solid material, said conveying worm being so formed as to permit the treating liquid to flow from the liquid supplying means to the liquid withdrawing means in a path substantially parallel to the axis of the worm whereby the liquid will flow countercurrent to the solid material.

7. In an apparatus for the treatment of solid materials with liquids, the combination of a cas-' ing, means forfeeding solid material arranged at one end of the casing, means for discharging solid material arranged at the other end of the casing, a conveying worm provided with openings arranged within the casing, shovels aflixed to the sheet of the conveying worm, means for rotating said conveying worm, means for supplying treating liquid to the casing adjacent said means for discharging solid material, and means for withdrawing liquid from the casing adjacent said means for feeding solid material whereby the liquid will flow countercurrent to the solid material.

8. In an apparatus for the treatment of solid materials with liquids, the combination of a casing, feed means and discharge means for solid material at opposite ends of the tube, a conveying worm provided with openings arranged within the casing, shovels rigidly aflixed to the sheet of the conveying worm and having the form of even planes arranged between the threads of the conveying worm, means for rotating the conveying worm, means for supplying treating liquid to the casing adjacent said discharge means and means for withdrawing liquid from the casing adjacent said feed means whereby the liquid will flow countercurrent to the solid material.

9. In an apparatus for the treatment of solid materials with liquids, the combination of a casing, feed means and discharge means for solid material at opposite ends of the tube, a conveyfeeding 2 discharge means and means for withdrawing liquid from the casing adjacent said feed means whereby the liquid will flow countercurrent to the solid material,

10. In an apparatus for the treatment of solid materials with liquids, the combination of a tube, feed means and discharge means for solid material at opposite ends of the tube, a conveying worm provided with openings rigidly arranged within the tube, shovels affixed to the sheet of said conveying worm, means for rotating said tube and conveying worm, means for supplying liquid to the tube adjacent said discharge means and means for withdrawing liquid from the tube adjacent said feed means whereby the liquid and the solid material ,flow countercurrent to each other in said tube.

11. In an apparatus for the treatment of solid materials with liquids, the combination of a tube, feed means and discharge means for solid material at opposite ends of the tube, a conveying worm provided with openings rigidly arranged within the tube, shovels afiixed to the sheet of said conveying worm, and having the form of even planes arranged between the threads of the conveying worm, means for rotating said tube and conveying Worm, means for supplying liquid to the tube adjacent said discharge means and means for Withdrawing liquid from the tube adjacent said feed means whereby the liquid and the solid material flow countercurrent to each other in said tube.

12. In an apparatus for the treatment of solid materials with liquids, the combination of a tube, feed means and discharge means for solid material at opposite ends of the tube, a conveying worm provided with openings rigidly arranged within the tube, shovels affixed to the sheet of said conveying worm and having the form of a worm of greater angle of inclination, means for rotating said tube and conveying worm, means for supplying liquid to the tube adjacent said discharge means and means for withdrawing liquid from the tube adjacent said feed means whereby the liquid and the solid material flow countercurrent to each other in said tube.

13. In an apparatus for the treatment of solid materials With liquids, the combination of a tube, inlet and discharge devices for introducing material into and withdrawing material from the tube, a conveying Worm sheet provided with openings rigidly arranged inside the tube, means for rotating the tube, shovels secured to the worm sheet and extending inwardly from the wall of the tube a distance not greater than the Width of the worm sheet and at a retarded angle to the radius of the tube.

14. In an apparatus for the treatment of solid materials with liquids, the combination of a tube, inlet and outlet devices for introducing material into and withdrawing material from the tube, a

conveying worm provided wth openings rigidly arranged inside the tube, means for rotating the tube, shovels secured to the worm sheet and extending inwardly from the wall of the tube a distance not greater than the width of the Worm sheet and at a retarded angle to the radius of the tube, said shovels having the form of a Worm of greater angle of inclination.

ERNST KUSS. HORST MIESSNER. 

